Located in the bustling Adjame quarter of Ivory Coast's main city and commercial hub, the haven for fake medicine has been targeted time and again by authorities and stockpiles burnt.

World Bulletin / News Desk

There's nothing covert about Roxy -- a huge market in Abidjan selling counterfeit medicine, the scourge of Africa and the cause of around 100,000 deaths annually on the world's poorest continent.

But it resurfaces every time.

"The police hassle us but they themselves buy these medicines," said Mariam, one of the many mainly illiterate vendors who hawk everything from painkillers and antibiotics to anti-malaria and anti-retroviral treatments.

"When we are harassed we always come to an arrangement with them to resume our activities," she said.

Fatima, another hawker, said: "Many people come here with their prescriptions to buy medicine, even the owners of private clinics."

She said there was a "syndicate" controlling the sector that held regular meetings to fix prices and supply levels.

Fake medicines bring about some 100,000 deaths a year in the continent, according to the World Health Organization (WHO).

The illicit sector has a turnover of at least 10 percent of the world pharmaceutical business, meaning that it earns tens of billions of dollars a year, the Switzerland-based World Economic Forum estimates, adding that the figure has nearly tripled in five years.

"To sell fake medicines, you need a clientele. The ailing poor are more numerous in Africa than anywhere in the world," said Marc Gentilini, an expert on infectious and tropical diseases and a former head of the French Red Cross.